Claudio Bizzotto claudiobizzotto

Linux Academy

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Linux clean up /boot - remove old kernels

Easiest and safest

sudo apt-get autoremove --purge

This command will usually keep the last 3 kernels in the partition, which is good in case anything goes wrong with the current kernel.

Keybase proof

I hereby claim:

I am claudiobizzotto on github.
I am claudiobizzotto (https://keybase.io/claudiobizzotto) on keybase.
I have a public key ASAq0V_2Ci1-zcJtf8czSzpDIQ-pl0UdhzzWhr_nsybIGwo

To claim this, I am signing this object:

Export

Save all filters (msgFilterRules.dat files) in a zip file:

$ find .thunderbird/ -type f -name msgFilterRules.dat -print | zip thunderbird-filters -@

Import

Downgrade Virtualbox guest additions in your virtual machine (Ubuntu 16.04)

Make sure your VM is running and ssh into it. From there, run the contents of downgrade-vbox-guest-additions.sh below.

Stop vagrant-vbguest automatic updates

From your host machine, if you have the vagrant-vbguest plugin installed, make sure you deactivate it for this specific VM. To do that, set auto_update to false in your Vagrantfile:

config.vbguest.auto_update = false

Recursive wget example

wget \
-e robots=off \
--force-directories \
--ignore-case \
--no-verbose \
--show-progress \

Free left-handed mouse

Quick, dirty and cheap way to get a left-handed mouse on Linux (tested on Ubuntu only).

Installation

Just place this function in your ~/.bash_aliases file:

# Left-handed mouse buttons

http://expect.sourceforge.net/

I've just tried this on a 16.04, but it should work on older versions of Ubuntu as well.

(1) Download and install ActiveTcl Free Community Edition

http://www.activestate.com/activetcl/downloads

Download and extract the files, then cd into the extracted directory and run ./install.sh (with root permissions).

	# General
	alias diffall="diff --brief --recursive --new-file"

	# Networking
	alias myip='dig +short myip.opendns.com @resolver1.opendns.com'

	# GPG
	alias keys="gpg --list-secret-keys --keyid-format LONG"

	# Python SimpleHTTPServer

	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Signal/1.6.1 Chrome/59.0.3071.115 Electron/1.8.2 Safari/537.36 node/8.2.1 env/production
	INFO 2018-03-19T18:30:20.666Z app ready
	INFO 2018-03-19T18:30:20.725Z Location reset needed
	INFO 2018-03-19T18:30:20.725Z Initializing BrowserWindow config: {"show":true,"width":800,"height":610,"minWidth":640,"minHeight":360,"autoHideMenuBar":false,"webPreferences":{"nodeIntegration":false,"preload":"/Applications/Signal.app/Contents/Resources/app.asar/preload.js"},"icon":"/Applications/Signal.app/Contents/Resources/app.asar/images/icon_256.png"}
	INFO 2018-03-19T18:30:21.892Z Using OS-level spell check API with locale en_US
	INFO 2018-03-19T18:30:22.092Z pre-main prep time: 1 ms
	INFO 2018-03-19T18:30:22.130Z Build expires: 2018-06-13T23:25:52.000Z
	INFO 2018-03-19T18:30:22.151Z background page reloaded
	INFO 2018-03-19T18:30:22.151Z environment: production
	INFO 2018-03-19T18:30:22.220Z migration 1.0